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(lg5)^2+2lg2-(lg2)^2+log23乘log34等于?
人气:153 ℃ 时间:2020-03-28 09:12:17
解答
(lg5)^2+2lg2+(lg2)^2+log2(3)log3(4)
=(lg5+lg2)^2+log2(4)
=1+2
=3
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